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* [Bug libstdc++/61645] New: forward_list::splice_after shall not throw exceptions
@ 2014-06-29 7:25 lh_mouse at 126 dot com
2014-06-29 10:50 ` [Bug libstdc++/61645] " daniel.kruegler at googlemail dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: lh_mouse at 126 dot com @ 2014-06-29 7:25 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61645
Bug ID: 61645
Summary: forward_list::splice_after shall not throw exceptions
Product: gcc
Version: 4.10.0
Status: UNCONFIRMED
Severity: minor
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: lh_mouse at 126 dot com
ISO/IEC 14882:2011
23.3.4.6 forward_list operations [forwardlist.ops]
void splice_after(const_iterator position, forward_list& x);
void splice_after(const_iterator position, forward_list&& x);
(... omitted ...)
3 Throws: Nothing. **
4 Complexity: O(distance(x.begin(), x.end()))
// test_case.cpp
#include <forward_list>
int main(){
std::forward_list<int> l{1,2,3};
static_assert(
noexcept(l.splice_after(l.before_begin(), l)),
"!!"
); // fails
static_assert(
noexcept(l.splice_after(l.before_begin(), l, l.before_begin())),
"!!"
); // ditto
static_assert(
noexcept(l.splice_after(l.before_begin(), l, l.before_begin(),
l.end())),
"!!"
); // ditto
}
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/61645] forward_list::splice_after shall not throw exceptions
2014-06-29 7:25 [Bug libstdc++/61645] New: forward_list::splice_after shall not throw exceptions lh_mouse at 126 dot com
@ 2014-06-29 10:50 ` daniel.kruegler at googlemail dot com
2014-06-29 16:44 ` redi at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: daniel.kruegler at googlemail dot com @ 2014-06-29 10:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61645
Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler@googlemail.
| |com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
"Throws: Nothing" does not impose the requirement onto implementations that
such a function is required to be marked equivalent to noexcept(true), so this
looks more like an enhancement request to me - but let's wait what Jonathan or
Pablo have to say.
>From gcc-bugs-return-455261-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jun 29 10:54:17 2014
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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/61647] internal compiler error: in push_access_scope, at cp/pt.c:219 for a c++ header, clang++ 3.4 generate .pch without error
Date: Sun, 29 Jun 2014 10:54:00 -0000
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Daniel Krügler <daniel.kruegler at googlemail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |daniel.kruegler@googlemail.
| |com
--- Comment #1 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
The ICE still exists on gcc 4.10.0 20140628 (experimental)
>From gcc-bugs-return-455262-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jun 29 10:54:48 2014
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From: "lh_mouse at 126 dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/61645] forward_list::splice_after shall not throw exceptions
Date: Sun, 29 Jun 2014 10:54:00 -0000
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--- Comment #2 from lh_mouse <lh_mouse at 126 dot com> ---
(In reply to Daniel Krügler from comment #1)
> "Throws: Nothing" does not impose the requirement onto implementations that
> such a function is required to be marked equivalent to noexcept(true), so
> this looks more like an enhancement request to me - but let's wait what
> Jonathan or Pablo have to say.
Replace forward_list with list, splice_after with splice and before_begin with
begin, all three static_assert's hold.
>From gcc-bugs-return-455263-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jun 29 10:56:09 2014
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From: "daniel.kruegler at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/61645] forward_list::splice_after shall not throw exceptions
Date: Sun, 29 Jun 2014 10:56:00 -0000
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--- Comment #3 from Daniel Krügler <daniel.kruegler at googlemail dot com> ---
(In reply to lh_mouse from comment #2)
> Replace forward_list with list, splice_after with splice and before_begin
> with begin, all three static_assert's hold.
Presumably this provides an consistency argument, yes.
>From gcc-bugs-return-455264-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jun 29 11:36:53 2014
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From: "dominiq at lps dot ens.fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/61627] specification expression ICE with version 4.7.1 and 4.8.2, incorrect output with 4.4.7 and 4.9.0
Date: Sun, 29 Jun 2014 11:36:00 -0000
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Dominique d'Humieres <dominiq at lps dot ens.fr> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-06-29
Ever confirmed|0 |1
--- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Revision r206658 (2014-01-16) gives the ICE and r206880 (2014-01-21) gives the
wrong code. The revisions in this range are r206759 and r206786, but they seem
unrelated to this PR.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/61645] forward_list::splice_after shall not throw exceptions
2014-06-29 7:25 [Bug libstdc++/61645] New: forward_list::splice_after shall not throw exceptions lh_mouse at 126 dot com
2014-06-29 10:50 ` [Bug libstdc++/61645] " daniel.kruegler at googlemail dot com
@ 2014-06-29 16:44 ` redi at gcc dot gnu.org
2015-04-08 16:40 ` redi at gcc dot gnu.org
2015-04-28 13:06 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2014-06-29 16:44 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61645
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Severity|minor |enhancement
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Definitely not a bug, marking as enhancement.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/61645] forward_list::splice_after shall not throw exceptions
2014-06-29 7:25 [Bug libstdc++/61645] New: forward_list::splice_after shall not throw exceptions lh_mouse at 126 dot com
2014-06-29 10:50 ` [Bug libstdc++/61645] " daniel.kruegler at googlemail dot com
2014-06-29 16:44 ` redi at gcc dot gnu.org
@ 2015-04-08 16:40 ` redi at gcc dot gnu.org
2015-04-28 13:06 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2015-04-08 16:40 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61645
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-04-08
Target Milestone|--- |6.0
Ever confirmed|0 |1
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Definitely not a bug, but we might as well add the noexcept.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug libstdc++/61645] forward_list::splice_after shall not throw exceptions
2014-06-29 7:25 [Bug libstdc++/61645] New: forward_list::splice_after shall not throw exceptions lh_mouse at 126 dot com
` (2 preceding siblings ...)
2015-04-08 16:40 ` redi at gcc dot gnu.org
@ 2015-04-28 13:06 ` redi at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: redi at gcc dot gnu.org @ 2015-04-28 13:06 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61645
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Author: redi
Date: Tue Apr 28 13:05:33 2015
New Revision: 222525
URL: https://gcc.gnu.org/viewcvs?rev=222525&root=gcc&view=rev
Log:
PR libstdc++/61645
* include/bits/forward_list.h (forward_list::splice_after): Add
noexcept.
* include/bits/forward_list.tcc (forward_list::splice_after):
Likewise.
Modified:
trunk/libstdc++-v3/ChangeLog
trunk/libstdc++-v3/include/bits/forward_list.h
trunk/libstdc++-v3/include/bits/forward_list.tcc
^ permalink raw reply [flat|nested] 5+ messages in thread
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2014-06-29 7:25 [Bug libstdc++/61645] New: forward_list::splice_after shall not throw exceptions lh_mouse at 126 dot com
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